番茄玉米间作对番茄叶片光合特性的影响

[目的]探讨番茄(Lycopersicon esculentum)玉米(Zea mays L.)间作条件下的番茄叶片光合特性。[方法]以6629、金矮红、豫星3浓度,与单作相比,差异均达到了极显著水平。不同番茄品种变化幅度不同,其中6629受影响较小,金矮红和豫星受影响较大。[结论]个番茄品种和甜糯八号、田蜜二号2个玉米品种为试验材料,将番茄与玉米进行间作,利用Li-6400便携式光合仪在自然光照条件下,测定番茄叶片的净光合速率、气孔导度等参数。[结果]番茄玉米间作降低了番茄叶片的净光合速率和气孔导度,增大了其叶片胞间CO2该研究可为番茄栽培管理提供理论依据。

Influences of Tomato (Lycopersicon esculentum )/Maize (Zea mays L.) Intercropping on Photosynthetic Characteristics of Tomato Leaves

[Objective] The purpose was to discuss tomato leaves photosynthetic characteristics under tomato/maize intercropping.[Method] The 3 tomato varieties(6629,Jinaihong and Yuxing) and 2 maize varieties(Tiannuo8hao and Tianmi2hao) were used to study the influences of tomato/maize intercropping on photosynthetic characteristics of tomato leaves by using the Li-6400 portable photosynthesis system.[Result] The results showed that there were highly significant differences on the net photosynthetic rate,conductance to H2O and the intercellular CO2 concentration of tomato leaves between tomato/maize intercropping and monoculture.The net photosynthetic rate and conductance to H2O of tomato leaves under tomato/maize intercropping were decreased significantly compared with monoculture.The intercellular CO2 concentration of tomato leaves under tomato/maize intercropping was increased significantly compared with monoculture.But the influences to 3 varieties were different,the influences to 6629 was lower relatively,and the Jinaihong and Yuxing were larger relatively.[Conclusion] The study provides a theoretical basis for tomato cultivation and management.